A method for remediating uranium-contaminated soil by constructing a plant community plot using Bamboo Willow-Dactylus chinensis-Boluohui

Abstract

The invention relates to a method for repairing uranium-contaminated soil by constructing plant community plots by adopting bamboo willow-duck-duck-grass-boluohui. The arbor bamboo and willow, the herbaceous plants Dactylacia and Boluohui, which can enrich uranium in the soil, are arranged in a compound triangle to construct a stable plant community with in-situ remediation of uranium-contaminated soil. Each plant in the plant community area enriches uranium from uranium-contaminated soil and transports it to the aboveground part of the plant, so as to achieve the purpose of remediating uranium-contaminated soil. It solves the shortcomings of monotonous plant species structure, poor stability, low soil fertility, small total enrichment, and low ecological function in the existing phytoremediation technology that uses a single plant population to remediate uranium-contaminated soil. A synergistic effect exists, resulting in significantly higher remediation efficiency compared to remediation of uranium-contaminated soils using a single plant population.

Description

technical field [0001] The invention belongs to the technical field of phytoremediation of uranium-contaminated soil, and in particular relates to a technology for remediating uranium-contaminated soil by using bamboo willow, duckweed and boluohui to construct plant community plots. Background technique [0002] As a very important strategic resource in the field of nuclear power industry and nuclear technology application, uranium is also a radioactive heavy metal element. While uranium resources mining satisfies the utilization of nuclear energy and nuclear technology, it also produces a large amount of uranium-containing waste rocks and tailings. Under various weathering effects, the uranium in the tailings may migrate to the pedosphere, seriously affecting the quality of the soil. function, leading to the destruction of the ecological landscape, the reduction of biodiversity, and eventually through the food chain, bringing potential harm to the regional ecosystem and res...

AI Technical Summary

Problems solved by technology

[0005] At present, a large number of hyperaccumulator plants have been extensively studied. However, most hyperaccumulator plants have small biomass and limited total uranium extraction, which limits their large-scale application.

The treatment effect of phytoremediation depends on the ability of plants to enrich uranium and the biomass of plants, so how to increase the biomass of plants, improve the ability of plants to enrich uranium, and their resistance to adversity has become a major issue in phytoremediation of uranium-contaminated soil technology. Therefore, some uranium-enriching plants with large biomass have gradually received widespread attention. However, current research mainly focuses on the remediation of uranium-contaminated soil by a single species, and there are few reports on the use of plant communities to enhance the species diversity of remediation systems.

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